Fluids can only cast raytraced shadows onto objects.
         
         To cast raytraced shadows onto objects
         
         
            - Select the fluid container for the fluid you want to cast shadows. 
- Turn on  in the  section of the fluidShape . 
            
- Select the light you want to cast shadows. 
- In the  for the light, expand  and under , turn on .
            
- Select the object and turn on  in the  section of the object’s .